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Total 3 documents matching your query.

1. LF: modeling a loop (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 29 May 2009 14:14:38 +0200; Dear all, confronted with the seasonal rise of the loss resistance of my 500kHz antenna (from 35 Ohm in winter to 80 Ohm in summer) I would eventually consider to try a loop antenna. Dimensions of th; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00252.html (11,070 bytes)
2. Re: LF: modeling a loop (score: 1): Author: Piotr Mynarski <[email protected]>; Date: Fri, 05 Jun 2009 02:43:55 +0200; When I model a 11m high and 22m long lazy-L antenna (using MMANA-GAL) the modeling result seem to agree with theory: 0.027 Ohm at 137kHz and 0.359 Ohm at 502kHz. But when I model a 10.5m high and 22; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00088.html (14,089 bytes)
3. Re: LF: modeling a loop (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 05 Jun 2009 09:39:23 +0200; Dear Peter, thanks for your interesting mail. One question regarding the general formula for radiation resistance: In other places I found Rrad = 160*Pi^2*(Heff/lambda)^2 = 1579*(Heff/lambda)^2 where; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00306.html (14,671 bytes)

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